Air motor



, sepfezz, 1925.

A. T. BoYKlN l AIR MOTOR original Filed March 24, 19,25 s sheets-sheet 1 314mm Hoz sept 22, r1925. 1,554,399

y A. T, BOYKIN AIR MOTOR Original Filed March 24, 1923 3 Sheets-Sheet 2 Sept. 22, `1925.

A. T. Bo'YKlN AIR MOTOR 1923 5 Sheets-Sheet 5 Original Filed March 24 ndern/rc1 Patented Sept. 22, 1925.

UNITED STATES AacHABALD T. BoYx'IN, or CARBON, TEXAS.

1,554,599l FICE.

Ain Moron.

Application led March 24, 1923, Serial No. 627,478. Renewed July 27, 1925,

air motors, and is an improvement on the apparatus covered inmy copending tion, Serial Number 504,961. V

In general, the present arrangement is similar to that set forth in my copending application, and the objects thereof in general be attributed tothe present 'construction.

applica- Amongthelobjects ofthe present inven-Y tion, in addition to improvingv upon .my

lformer apparatus, is to provide a novel construction and arrangement of the bearings for the wind wheel and its shaft and the `wind shield, further features 'residing in the specific arrangement of the wind-vane and governor connection with the wind shield, and the means whereby the apparatus maybe automatically vor manually controlled.

In the accompanying drawings:

Figure 1 is aside elevationof the appa ratuscomplete. d u i Figure 2 is atop plan viewthereof;

Figure Sisatop plan view showing different position;

Figure 4, a horizontal section through the wind-wheel, and u u Y u c y l Figure 5is a transverse section through the wind-wheel, partsbeing brokeny away; and

vFigures 6, 7 and 8 are detail sectional views of important features.v

Referring now to the accompanying draw-` ings, byv numerals of reference, 10 indicates a supportingv tower upon which is mounted the windwheel tokk be-later described, said tower, except-for details herein sety forth,

being substantially similarto that in my co-V pending application, Serial Number 504,961,

iled'OctoberB, 1921, A y.

The present structurediffers from that of the aforementioned application inthe following: y 7 i f Mounted below the apex ofthe tower, on cross-bars, is a meta-l rectangular plate 14 )overhang the crossbars, and Vto which they are secured by bolts. 'The plate has a `cen-Y tral recess adapted to receive the lower end .of the driving or power shaft 18. The plate 1s further provided with a pair of depending v'flanges 19 which provide bearing means for the end of a horizontal rotary shaft 2O upon the inner end of which is fixed a gear- 22 extending upwardly through a slot- 24 in said plate and meshing with a gear 25 mounted adjacent the lower end of the power shaft 18.

Fixed upon the upper apex or end of the tower isa cap or collar 29, secured in place 'through rivets or bolts, and upon this cap is `to support the wind-vane shaft against lateral movements. y The wind-wheel comprises a cylinder 34 .reinforced at each end upon the inside by bands or rings 25 riveted in position. The

support for the wind-wheel comprises ay shaft 36, having an upper squared end which is terminally screw threaded at'33, said shaft y extending axially through the cylinder 34,

the squared end cooperating 'with a similarly shaped apertured casting orv spider y38 hav# ing four radial apertured'flanges -39'upon which are respectively fixed longitudinally extending arms 40.V The ends of the arms are bolted or riveted respectively to the opposite ends `of the cylinder, said bolts passing through the reinforcing bands 35. After the spider38 has been seated upon the Asquaredlend of the shaft 36, a nut is applied to the threaded terminal 33, to bind the wind-wheel. The cylinder is provided with an annular series of radial blades 42 secured in position through bolted flanges, 44, maintained in proper spaced relation at their outer vertical edgesthrough spacing and bracing rods 45, having terminal hooks '46, which cooperate with perforations 48 in theblades. The shaft 36 isI of course formed rvwith or at least connected for `rotationv with vcircular drum-shapedfshield, 50, reinforced around the marginofitsopening by a reiny y forcing'metallicf strap 51 riveted in position, having upon opposite side`s,fl anges 15 which" the lower' face of the drum 51 being provided with a centrally located marginal notch for the-reception of lower end of a tube `53,

having a pair of spaced collars 54. These collars respectively engage upon opposite sides of the lower face of the drinn adjacent the marginal notch and are clamped by bolts 55,-a spacing sheet 56 being interposed' between said collars at their outer portions.

The shield is yieldingly held in a position to expose a portion of the wind-wheel blades through the medium of a wind-vane 60 mounted upon the outer end of the horizontal arm 61, the inner end of said arm being rigidly connected with` one side of a inetallicloop 66, the latter being pivotally mounted upon a stub shaft 62 iigid with "and extending upwardly from the upper central portion of the reinforcing band or strap. 51. The upper end ofthe stub shaft L62 vis threaded to receive a nut for maintaining the loop `66 inoperative position.

Extendinghorizontally from the loop 6G, in a line with but diametrically opposite lfrom the wind-vane carrying arm 6l, is a weighted orcounterbalancing arm from the Vupper faceiof which projects a lateral spring'latch 68, adapted to cooperate under conditions to be later specified withV a catch 69, catcli69 being ,arranged of course, in'.r Athe path of movement of the latch 68.

For the purpose of maintaining under normal conditions, the wind-shield responsive-to the control of the wind-vane, I pro- "vide a coil torsion-spring TQiwhich encircles the strip shaft=621and is vconnected at its yends respectively7 to ai portionof the vloop .andto a radial pin on said'stub shaft. The

vmovement of the wind-vane armis limited in-its movementfrom swingingV over the ,uppeiiface ofthe shield through a fixed stop-pin or lug 74;.

IVhile the wind-vane, under' normal conditions, maintainsfthe shield in, a position to expose certain of the wind-wheel' blades,

.andgperniits operation of the wind-wheel, it is necessary, under abnormal wind conditions, such as exists during a storm, to render the saidfwind-wheel inoperativeand thus prevent racingther'eof 'which is injurious to the whole mechanism for reasons unnecessary to` state.

To overcome this latter contingency, I provide the shield with a governing mech- `anisin whichcomprises an arm 78 which is secured by suitable fastening Ydevices 79 to the upper-*face ofthe said shield and includes an extension SO which normally lies Vat an angle of` substantially 135 vdegrees `withrelation tothe wind-vanearm 6l, and

carriesat-itsterminaha governor disk or blade 82, disposed in a vertical plane.

Arranged on'the rear portion ofthearm 78 is the catch 69-v previously `referred to, `this catch being formedi'by. an upturned iiange on said arm and cooperating with `the spring latch 68, carried by the counterbalanced portion 65 of the wind-vane,

der it non-effective.

sition to fully` cove-r the wind wheel blades. J

air upon the governor blade'will cause it to swing in the direction ofthe flow of the wind, overcoming the tension of the corded'spring, andthe wind-vane being held ina position parallel with-the air currents due to its greater area exposed to air pressure wil permit'the 'shield to swing with the S governor to cover the wind wheel and ren- Itis understood that the governor is operative only'wlien the air n'essure thereon overcomes the tension of the coil spring. If the pressure exerted upon-the governor blade is Sufficient it will causeltlie shield to be swung to suoli-an ex- *'tent that the spring latclr G9 will engage the catch 70 and maintain said shieldl in a po- Under these conditions to throw the wind wheel again into operative position, it is necessary for the operator to pull the trigger vcord 86 which trips the latch and permits the tension spring to `move the shield to uncovering posit-ion, to a degree dependent upon the yprf-zssurethen exerted upon the .governor blade.

Under certain conditions, the operator may wishfto manually render the wind wheel in- 10 operative, such for example when repair of parts is necessary. To this endyIprovide iupon the upper face of the shield, adjacent to the inner end of tliegovernor arm, a swivelledlpulley. over which passes a pull cord 92, securedj at one end'to an eye 06 attached to the outer end of the counterbalance 65, the lfree end being weighted and extending toward theground vwithin reach of the operator. By a pull on the cord 92, the shield is manually moved into the windvane covering position and latclied in the samemanner as in the case of the automatic operationby the governor.

Havingthus described my invention, what-l Y Iclaim as new is In an apparatus ofthe class described, a tower, a wind wheel rotatably mounted upon the upperend thereof, a semi-circular drum-shaped shield pivoted for oscillation on the uppjer -end of said-tower,:and partially surrounding said wind wheel, a windvane supported'upon said shield, a yield- -ingconnection between `said shield and said wind-Vanda counterbalance for `said wind 1 vane having a latch, a governor arm rigidly mounted upon the top of said shield, and having a governor blade at the outer end thereof, disposed in a vertical plane, a catch arranged on said shield adjacent the inner ture. end of the governor arm and adapted to eoaet with the latch on the eounterbalance,

ARCHABALD' T. BOYKIN.

when.said shield is moved by the pressure of Wind on said governor blade, and means for releasing said latch.

In testimony whereof I aiX my signa- 

